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In order to identify risk factors for typhoid fever in a highly endemic area, we undertook a case-control study in the Mekong delta, Viet Nam. Cases were 144 consecutive patients admitted to hospital with blood culture-confirmed typhoid fever. Two controls (1 in the hospital and 1 in the community) were chosen for each case. Standardized interviews were conducted with questions regarding recent contact with a typhoid fever patient, eating habits, hygiene and socio-economic level. Cases were more likely to have been in contact with a patient with typhoid fever than hospital controls (adjusted odds ratio (OR) = 5.2, 95% confidence interval (95% CI) 1.7-15.9) or community controls (adjusted OR = 11.9, 95% CI 2.3-60.7); 11% and 14% of typhoid fever cases (compared to hospital or community controls, respectively) were attributable to recent contact with a patient with this disease. These findings suggest that strategies directed towards the persons in contact with a patient might reduce the incidence of secondary cases of typhoid fever.

Original publication

DOI

10.1016/s0035-9203(01)90318-9

Type

Journal article

Journal

Trans R Soc Trop Med Hyg

Publication Date

01/2001

Volume

95

Pages

19 - 23

Keywords

Adolescent, Adult, Aged, Case-Control Studies, Child, Child, Preschool, Female, Hospitalization, Humans, Infant, Infant, Newborn, Logistic Models, Male, Middle Aged, Pilot Projects, Prevalence, Risk Factors, Typhoid Fever, Vietnam